Glossary
Terms used in accessibility research and practice. Each entry has a definition, common aliases, and category tags.
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- Markup Language
- A system of annotations or tags embedded within text that define the structure, presentation, or semantics of content without being displayed as visible text themselves. In web accessibility, markup languages such as HTML, XML, ARIA, and SVG are fundamental because assistive…
- Mashup(also: Web mashup)
- A web application or page that combines data, functionality, or presentation from two or more external sources to create a new service. Mashups use APIs or data feeds to seamlessly blend content from different sites, often without clear demarcation between sources. In…
- MathJax
- An open-source JavaScript display engine that renders mathematical notation written in LaTeX, MathML, or AsciiMath in web browsers. MathJax is significant for accessibility because it produces output that can be read by screen readers, supports keyboard navigation of…
- MathML(also: Mathematical Markup Language)
- An XML-based markup language standardized by the W3C for describing mathematical notation and capturing both its structure and content. MathML enables screen readers and other assistive technologies to interpret and convey mathematical expressions to users with visual…
- Metadata
- Data that provides structured information about other data or digital content. In accessibility, metadata plays a critical role in describing the accessibility features and characteristics of digital resources — for example, indicating whether a document has alternative text for…
- Microservices(also: Microservice Architecture)
- A software architecture pattern where an application is composed of small, independent services that communicate over well-defined APIs, each responsible for a specific function and deployable independently. In accessibility tooling, microservices architecture enables modular…
- Multilingual Web(also: Multilingual Website, Multi-language Web)
- Web content that is available in more than one language, typically through localization of an original website into additional language versions. Multilingual websites present unique accessibility challenges because the localization process can introduce or remove accessibility…
- MutationObserver(also: DOM Mutation Observer, Mutation Records API)
- An HTML5 browser API that monitors and reports changes to the Document Object Model (DOM) structure of a web page in real time, including additions and removals of elements, attribute changes, and text modifications. For accessibility, MutationObserver is significant because it…
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